Ecraseur



(No Model.

1). M. SOHEFPER & G. F. MARTIN.

EGRASEUR.

No. 326,792. Patented Sept. 22, 1885.

721? MM! W UNITE STATES Tries.

ATENT DAVID M. SCI-IEFFER, OF NEWV CASTLE, AND CHARLES F. MARTIN, OFEVANSVILLE, INDIANA.

ECRASEUR.

SPECIFICATION forming part of Letters Patent No. 326,792, datedSeptember 22, 1885.

Application tiled June 3, 1885. (No model.)

To all whom, it may concern.-

Be it known that we, DAVID M. SOHEFFER and CHARLES F.I\IARTIN, citizensof the United States, respectively residing at New Castle, Henry county,Indiana, and Evansville, in the county of Vanderburg and State ofIndiana, have invented certain new and useful Improvements in Ecraseurs,of which the following is a specification,reference being had therein tothe accompanying drawings.

This invention relates to improvements in ecraseurs for castratinganimals, and has for its object the severance of the spermatie cord, andto afford a convenient means whereby the necessity of using clampsandsearing theparts may be obviated, and whereby, also, the operation ofrelieving the animal of its testicles or other protuberanees may be morespeedily performed than in the ordinary manner.

The nature of the invention consists, essentially, in a slotted tube, towhich is fitted a slide carrying the ends of a fiat-linked chain, whichpasses through and is closely fitted to a slot provided withfriction-rollers. The said slot is formed in a piece of metal attachedto one end of the slotted tube, and is placed at right angles to theaxis of the said tube. The links of the chain are placed very close toeach other, and the edges of the links are square and quite sharp, asare also the upper and lower edges of the slot. The action, therefore,of the chain and slot when any object is placed in the bight of thechain, and the chain is forcibly drawn through the slot by force appliedto the slide, is to compress as well as to out like a pair of shears.\Vithin the slotted tube is aspiral spring, one end of which bearsagainst the slotted piece and the other against the slide, and has theeffect to push them apart. The lower side of the slotted tube isprovided with a handle,whieh extends to near the end of the slottedtube, and terminates in a head forming a part of said slotted tube, andprovided with a transverse slot on a line with the axis thereof. To thishead and extending into the slots thereof are two pivoted pawls, eachprovided with spiral springs,whieh press in an outward direction againstthumb and fin ger pieces, forming a part of said pawls, by means ofwhich the pawls may be turned upon their axes when pressed upon by thethumb and finger of the operator. These pawls are each cut withscrew-threads, which, when the pawls are in normal position, engage witha long screw-threaded rod, one end of which is attached to the slidehereinbefore mentioned, and the other provided with a crank-handle,whereby the rod may be rotated and the slide and chain be forcibly drawnthrough the chainslot. This construction permits the threaded portion ofthe pawls to be instantly disengaged from the screwrod, and therebyallows it to be moved freely in either direction within and on a linewith the axis of the slotted tube simply by pressing upon the thumb andfinger pieces.

It should be noted that the thread on the rod, as seen in Figure 5, isconverse, so that the rod may be drawn out without the necessity ofdisengaging the pawls therefrom.

In the drawings forming a part of this specification, Fig. 1 is a planview. Fig. 2 is an elevation. Fig. 3 is a sectional View of a part ofthe tube, and shows the chainslot and frictionrollers. Fig. at is adetached view of the slide, having its spring-cover removed therefrom.Fig. 5 is a sectional view of the pawls, the head, and part of the tube.Fig. 6 is an end view of tube and shows the chain-slot. Fig. 7 is atransverse section of the slide and tube.

The letter A indicates the slotted tube; B, the piece of metal havingthe chain-slot; l), the chain-slot; b, the friction-rollers; O, thechain; D, the slide; D, a spring-cover attached there to by means of ascrew, d. The two ends of the chain 0 are fitted in recesses in the topof the slide D, and are maintained in place by the spring-cover D. Thisspring may be lifted by the thumb and finger of the operator, andthereby release one or both ends of the chain.

E is the spiral spring within the slotted tube A. F is the screw-rod,the thread of which is converse for the purpose above set forth; F, thecrank-handlethereof; G, the pawls; G, the slotted head; g, the spiralspring.

H is the handle of the instrument.

To operate the device, first place the fingers upon the pawls,disengaging them from the rod; then catch the chain at the loop end anddraw it out to its fullest extent, and then place the loop over theprotuberance. This disengagement also permits the spring to carry thechain toward the pawls and back through the slot, and thereby form orcreate sufficient tension to prevent the escape of the protuberance fromthe grasp of the chain. Now by removing the fingers from the pawls theywill engage the rod again, and then by operating the crank to rotate therod to the right the protuberance is severed. By using the instrument inthis way the artery or vein is closed,which prevents bleeding, andtherefore obviates resort to cauterizing orligating, which we havedemonstrated and practically done during the recent past.

Having described our invention, what we desire to secure by LettersPatent and claim is 1. An ecraseur consisting of a slotted tube, a slidefitted to the slot of said tube, a fiatlinked chain attached to saidslide, the bight of which is adapted to be drawn through a slot at oneend of and at right angles to the axis of said slotted tube, a spiralspring within said slotted tube, and a screw-rod attached to said slide,having crankhandle, in combination with pivoted pawls threaded at oneend, so as to engage with said screw-rod, and having at the other endthumb and finger pieces and spiral springs, for the purposes herein setforth.

2 In an ecraseur, the slide D, adapted to hold the ends of chain 0,the'end piece, B, having slot 1) and friction-rollers b, the slottedtube A, and spiral spring E, in combination with screw-rod F, pivotedpawl G, spiral springs g, and head G, as described, and for the purposesset forth.

3. In an ecraseur, the combination, with a slotted tube having atransverse slot near one end for the passage of the chain, and the slidefitted to move in said tube, and having a fiatlinked chain detachablyconnected thereto, of a rod having a converse screw-thread and carryinga handle, and-the pivoted pawls having threads corresponding to that onthe rod, whereby the connection between the pawls is positive in onedirection and yielding in the other.

In testimony whereof we affix our signatures in presence of twoWitnesses.

DAVID M. SCHEFFER. CHARLES F. MARTIN.

Witnesses:

W. P. LEONARD, T. E. GRUMBAUGH.

